Abstract
Herein, we report that an innovative type of 1D nanomaterials, electrospun composite nanofibers (diameters ∼175 (±25 nm) containing a complex of Eu(TTA) 3phen in a matrix of polyvinylpyrrolidone (PVP), was prepared and characterized, and their luminescent properties were evaluated. The study revealed that, when the content of Eu(TTA) 3phen was low (i.e., less than 23 wt %), the Eu(TTA) 3phen was predominantly distributed in the composite nanofibers as molecular clusters and/or nanoscaled particles with sizes smaller than 10 nm; this substantially enhanced intermolecular interactions between individual Eu(TTA) 3phen molecules and the neighboring chain segments of PVP. The Judd-Ofelt theory was used to study the effect of the dispersion of Eu(TTA) 3phen on the local chemical environment of Eu 3+ ions. The composite nanofibers demonstrated a significant improvement of luminescent efficiency compared with neat Eu(TTA) 3phen.
| Original language | English |
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| Pages (from-to) | 3898-3903 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 114 |
| Issue number | 9 |
| DOIs | |
| State | Published - 11 Mar 2010 |
| Externally published | Yes |